Lamp.



2. 0 mw V. o N. d B t n e .t a DI H. vab Dn A M nm LAMP. (Aplxieauionmed nec. 2o, 1900.)

3 Sheets- Sheet l.

(No Model.)

'No. 7|3,'|26. Patented Nov. Il, i902.

n. MARSH.'

LAMP.

:Application led Dec. 20, 1990.) (No Model.)

3 Sheets-Sheet 2.

INq. 7|3,|26. Patented Nov. Il, |902.`

n.l MARSH.Y

LAMP.

(Appnmion med me. 2o, 1900.)A

3 Sheets-Sheet 3.

(mi Model.)

UNITED STATES PATENT OFFICE.

- RIYERIUS MARSH, oE NEW BRUNSWICK, NEW JERSEY, AssIGNoR To GEORGE W.GLAENTZER, oE NEW YORK, N. Y.

LAMP.

SPECIFICATION formingpart of Letters Patent No. 713,126, dated November11, 192.

'Application filed December 20, 1900. Serial No. 40.519. (No model Toa/ZZ whom it may concern:

Be it known that I, RIVERIUS MARSH, of New Brunswick, in the county ofMiddlesex, and in the State of New Jersey, haveinvented certain new anduseful Improvements in Lamps; and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawings, in which- Figure l is a Vertical sectionalview of a lamp and lamp-post embodying my invention, the mantle andinner tube being in their normal positions. Fig. 2 is a similar view,showing the mantle raised into the innertube and the latter Withdrawnfrom the lamp. Fig. 3 is a horizontal sectional view of the tubewhichsurrounds the lower portion of the mantle, and Fig. t is a verticalsection View of a portable lamp embodying my invention.

Letters of like `name and kind refer to like parts in each of thefigures.

The object of my invention is to provide a gas -lamp of the incandescenttype which shall be adapted, among other uses, to serve as a streetlamp, and which shall v have, among other advantages, those of beingsimple in construction, capable of being lighted, regulated, andextinguished without opening the lamp, of protecting the refractorymantle from injury by knocks and jars during the normal use of the lamp,of havinga part by which said mantle can be protected from wind, rain,or knocks during the cleaning of the lamp, of having a part which shallprotect the mantle during transportation and while it is being placed inthe lamp, and of utilizing the lamp-post as a source from which tosupply a uniform current of air for the lamp, such current being freefrom influence by the wind; and to such ends my in.

-vention consists in the lamp .hereinafter specied.

In carrying my invention into practice I provide a hollow lamp-post A,havingan airopening a therein and .having a gas-pipe B extending upwithin such post. On the up-l per endof the gas-pipe at a heightconven-v iently reached by a person standing on the sidewalk a partCissecured, which part supports a mixer-tube and air and gas valves of .anydesired description. A door ot' iu the lamp-po'st-affords access to thepart C and tube D. The tube D extends upward through the lamp-post andabove the top thereof. Within the upper end of the tube D an invertedcone E is supported, as by arms e and e, which are attached to the coneand to the tube D. The base of the cone is smaller than the tube D,sothat an annularspace is formed between the cone and tube. A bead a2 isformed on the lamp-post near the upper end thereof, and a globe-holder Frestson such bead and itself supports a globe G. A reflector H issupported on the upper edge of the globe by spring-arms h and h, whichare attached to such reflector and are provided with U-shaped bends hand h', that engage such upper edge. An'outertubeI is attached tothereector I-I, and an inner tube K is supported within the outer tube byspringarms 7e and 7c, attached to the inner tube and having bends la andk', which engage the upper edge of the outer tube. Spring-arms .g'

of the outer tube and be'ar against and retain the inner tube in acentral position. A protector L is attached to the inner tube andextends over and above the outer tube, and a protector M is supportedabove the upper end of such tube, the protector M having an apron whichis larger in diameter than said tube and that preferably extends downbelow its upper edge. Y

f A mantle-holder is attached to the inner tube, such holder consistingof a preferably flat strip N, having an arm n formed on or attachedthereto, which arm extends to the ,center'of the inner tube, where ithas a hook for the support of the mantle. The strip N has a threadedstud n projecting outward therefrom,anda nut/cgis screwed on said stud.The inner tube and the outer tube are each provided with a verticalVslot 2 and g2, respectively, and the strip N is situated inside theinner tube, while the threaded studprojects through the slot 112,so'that the mantle-holder can be clamped to the inner tube by screwingthe nut against the outer side of such tube. A key O, having aforked orsocketed end o, is inserted through the slot g2 and enand g are securedwithin the lower portion' IOO gages the nut n2 to loosen or tighten andraise or lower the same for the purpose of adjusting the mantle-holderup or down.

The lower end of the strip Nof the mantleholder supports a short tube P,which surrounds the lower portion of the mantle. Such tube is preferablyformed by bending a sheet of metal about an axis and into cylindricalform and uniting the meeting edges by a seam. The seam Iprefer is formedby bending a narrow strip p along one edge of the sheet toward one faceof the sheet, bending a similar strip p along the opposite edge of thesheet toward the opposite edge of the sheet, and then when the sheet isbent into cylindrical form engaging the hooks thus formed and pressingthem together to fasten the seam. Before pressing the strips p and p',together the strip N is inserted into the seam, and when the strips pandp are pressed together on each side of the strip N a guideway isformed, in which the strip N is Securely but adjustably held.

In the operation of my lamp when it is desired to light the lamp, theparts being in the positions shown in Fig. l, the gas is turned on inthe pipe B and passes into the tube D. The mixture of gas and air thenpasses up through the long tube D, becoming thoroughly and evenly mixedduring its passage, and traverses the inner tube, from which it findsexit under the protector M. A torch is applied at such point, and theflame travels backward to the burner. As the mixture of gas and airascends the tube D it strikes the cone and issues in a hollow conicalstream, which strikes the mantle in an advantageous manner to cause alarge proportion of the latter to become heated.

When it is desired to clean the lamp, the key O is inserted through theslot gz and engaged with the nut n2. Such nut is then loosened and movedupward, carrying with it the mantle-holder, the mantle, and the tube Puntil the latter tube is in contact with the lower end of the innertube, when the mantle will be entirely inclosed and protected by thesaid tubes. The inner tube, with its attached parts, can then be raisedout of the lamp and the latter be cleaned or repaired. A new mantle canbe placed in the inner tube in a protected location and then carried tothe lamp, or the mantle can, if desired, be shipped in such tube.

It will be observed that when the door is closed the air can only findadmission to the burner by entrance through the air-opening a, and thatit then has to traverse so long and tortuous a passage that neither thedirection nor the force of the wind can seriously aifect the action ofthe burner. It will also be noted that the proportions of air and gascan be varied as desired by parts which are in convenient reach of aperson standing on the sidewalk.

In Fig. 4 is illustrated another embodiment of my invention. The lamphere illustrated is portable. Its stand Q has formed on or attached atits base a tube R, which is closed near its lower end by a bottom r. Theportion r' of the tube R below the bottom r is provided with ascrew-thread. A threaded shell S is screwed into. the tube R, and theupper end of the latter tube is formed by a plate s, while its lower endis formed by a plate s', said plates being formed on or attached to suchtube. Coinciding apertures are formed in the bottom r and plate s forthe passage of gas, and a valve in the form of a disk is located betweensaid bottom and such plate. A handle t projects from such disk through aslot in the tube R, and perforations are formed in the said disk, suchperforations being preferably so located that a graduated number of themwill be coincident with the slots in the bottom r and plate s insuccessive positions of the disk. To insure packing of the disk, washersU and U are preferably placed on opposite sides of it and between thebottom r and plate s.y Such washers are conveniently formed of cork. Thestand is conveniently provided with legs, which raise its bottom, andthe tube R extends below such bottom, so as to expose the handle of thevalve to easyreach. A tubeV for the attachment of a hose extending to asource of supply of gas is connected with the plate s' by having asleeve 'u drawn up from v the metal thereof and passed through anopening in such plate, the sleeve being turned down on the opposite faceof the said plate. If desired, the sleeve can be formed on the plateinstead of on the tube. The sleeve can be turned over so tightly as toprevent motion between the shell and the tube, or said connection can besuch as to permit motion between the said parts.

An exteriorly-threaded shell c is connected to the tube V eitherdirectly or by means of an interposed hose, and the end of such shellopposite the tube V is closed by a plate o2, having slots therein. Suchshell is screwed into the threaded open end of a tube 03, the latterhaving a slotted diaphragm o4 formed or secured therein and having aportion v5 extending beyond such diaphragm for the attachment of afurther section of hose. A valve in the form of a disk is interposedbetweenthe plate o2 and the diaphragm e, and a handle e7 thereon extendsthrough a slot in the tube v3. The said valve has apertures, a greateror less number of which are open, according to its position relative tothe slots in the plate u2 and the diaphragm '04. The form of valvedescribed is exceedingly cheap. The mixer-tube W is seated in the tubeR, and such tubes are, as before, provided with apertures which can bemade to coincide more or less for the admission of more or less air. Theupper end of the mixertube extends above the neck of the stand, and ahandle w,

iOO

IIO

attached to such tube, is bent over the edge x of said neck, such handleserving to turn the mixer-tube in the tube R. Aperforated cylinder X issupported loosely in the upper end of the mixer-tube by hooked arms 0cand attached to such cylinder. A flanged ring Y rests on a bead on thestand and supports a globe. Such ring is slotted to permituthe passageand movement of the handle w. The globe and its attached parts may be ofthe construction before described. Air is admitted through an aperture Zin the'stand.

Features ot" the above-described invention are not claimed, broadly,herein, but are so claimed in an application executed of even dateherewith.

It is obvious that changes can be made in my lamp'and in my lamp-postwhich are within the scope of my invention.

Having thus described my invention, what I claim isl. In a lamp having amantle, the combination with a tube above the mantle, said tube having asubstantially vertical slot therein, of a mantle-holder having a partprojecting through such slot and having means for engaging the inner andouter walls of said tube, substantially as and for the purposedescribed.

2. In a lamp having a mantle, the combination with a tube above themantle, said tube having a substantially vertical slot therein, of amantle-helder having a threaded Astud projecting through such slot andhaving a nut on such stud for clamping said mantle-holder to such tube,substantially as and for the purpose described.

3. In a lamp having a mantle, the combi-V nation with an inner Vtubeabove the mantle, of an outer tube, such tubes having` aliningsubstantially vertical slots, a mantle-holder having a threaded studprojecting through the slot in the inner tube, a nut engaging suchthreaded stud, and a `key adapted to be passed through the slot in theouter tube and engaged with said nut, substantially as and for thepurpose described.v

4. In a lamp, the combination with a tube having apertures in its sides,of a mixer-tube' seated Within such iirst-mentioned tube, saidmixer-tubeV having corresponding apertures, a diaphragm extending acrossthe iirst-mentioned tube, a shell screwed into the open end thereof, theend wall of the shell and the diaphragm being correspondingly slotted,and a valve in the form of a disk interposed between such end Wall andsaiddiaphragm, substantially as and for the purpose described.

5. In a lamp, the combination with a tube having apertures in its sides,of a mixer-tube seated within such first-mentioned tube, said mixer-tubehaving corresponding apertures, a diaphragm extending across thefirst-mentioned tube, a shell screwed into the open end thereof, the endwall of the shell and the diaphragm being correspondingly slotted, and avalve in the form of aY disk interposed between such end Wall and saiddiaphragm, such valve having a handle extending through a slot in saidtube, substantially as 'and for the purpose described.

6. In a lamp, the combination with a tube having apertures in its sides,of a mixer-tube seated within such first-mentionedtube, said mixer'tubehaving corresponding apertures, a diaphragm extending across thefirst-mentioned tube, a shell screwed into the open end of the latter,the end wall ofthe shell and the diaphragm being correspondinglyslotted, a valve in the form of a disk interposed between such end walland said diaphragm, and a gas-tube unitedto such shell, the unionbetween such parts consisting of a sleeve passed through an opening in awall and upset on the opposite side thereof, substantially as described.

'7. In a lamp, the combina-tion with a tube threaded at one end andhaving a diaphragml interposed therein, of a shell screwed into suchtube, an end wall of the tube being parallel to said diaphragm, a valvein the form of a disk interposed between such diaphragm and said endWall, and a handle for such disk, said handle extending through a slotin vsuch tube, said diaphragm and end wall and such have hereunto set myhand this 28th day of November, 1900.

RIVERIUs MARSH.

Witnesses:

JULIA D. MARSH, CAROLINE H, MARSH.

